Messages in this thread | | | Date | Tue, 04 Mar 2008 06:51:41 +0100 | From | Cyrus Massoumi <> | Subject | Re: Performance versus FreeBSD 7.0 |
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Andi Kleen wrote: > Cyrus Massoumi <cyrusm@gmx.net> writes: >> IIRC, going to fine-grained file locking gave them a huge boost in >> this particular benchmark (and maybe others). > > What locking? You mean their equivalent of i_mutex? There are > already file systems on Linux that don't use it significantly > for write. > >> As I said on lwn.net Peter Zijlstra posted a patch to break the global >> file list lock about a year ago [1], but I don't think it was ever >> merged. Here [2] are some numbers for the patchset. > > The file_list_lock is only for open/close which MySQL is very unlikely > to do in its fast path. You're totally on the wrong path here I think.
Yes, Nick already corrected me, sorry for the noise :)
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